Watch: Hong Kong’s Davis Cup first round tie with Vietnam from Hanoi
Michael Walker’s side need to win the final reserve singles match on Sunday to progress to the second round of the Asia/Oceania bracket
Karan Rastogi takes on Nguyen Hoang Thien with Hong Kong needing to win to advance to a second round tie with Pakistan after world number 911 Jack Wong Hong-kit lost to world number 635 Ly Hoang Nam 6-3, 7-6 (10-8), 6-4 to level the best-of-five tie at 2-2 on Sunday.
Watch: Karan Rastogi v Nguyen Hoang Thien
Watch: Jack Wong Hong-kit v Ly Hoang Nam